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Subject: "FT1 vs. AIS problems" Previous topic | Next topic
Vox Sciurorum Registered since 18th Oct 2007Fri 23-Mar-12 12:32 AM
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"FT1 vs. AIS problems"


Newton, US
          

I tried to mount two old AIS lenses on an FT1 and neither would mount. They went most of the way in at the correct orientation but there seems to be a pin preventing them from going all the way in and turning to lock. They work fine on a D700. My AF-D lenses (with aperture ring) mount on the FT1.

Holding the lens release button on the FT1 didn't make a difference.

I know people have used AIS lenses with the FT1. What am I missing?

The lenses are the 20mm f/3.5 and 28mm f/2, mainly because I was curious. I can live without them if they are incompatible.

  

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Replies to this topic
Subject Author Message Date ID
Reply message RE: FT1 vs. AIS problems
wblink
23rd Mar 2012
1
Reply message RE: FT1 vs. AIS problems
piniongear
24th Mar 2012
2
Reply message RE: FT1 vs. AIS problems
piniongear
24th Mar 2012
3
     Reply message RE: FT1 vs. AIS problems
Vox Sciurorum
24th Mar 2012
4
          Reply message RE: FT1 vs. AIS problems
piniongear
24th Mar 2012
5

wblink Registered since 09th Feb 2009Fri 23-Mar-12 04:42 PM
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#1. "RE: FT1 vs. AIS problems"
In response to Reply # 0


Gendt, NL
          

Don't have nany answer to your problem, I'm sorry.

Just wanted to say you look great on your avatar!

Willem

Sony Nex-7

  

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piniongear Registered since 29th Jul 2006Sat 24-Mar-12 12:48 AM
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#2. "RE: FT1 vs. AIS problems"
In response to Reply # 0
Sat 24-Mar-12 12:50 AM by piniongear

Houston Texas, US
          

************************************************************************
The AIS lens has a raised lug that covers approx 120° with a small raised lug directly opposite that one.

If you look at a AFD lens you will see the same lug goes around approx 270°. The FT1 was made to fit up with an AF lens and unfortunately any AIS lens is not going to mount on the FT1.

I tried my 28mm AFD lens and it fit fine.
I then tried my AIS 24mm lens and no go.
The lugs on an AIS lens are too different from the AFD to fit on the FT1.
Strange, because the AIS lens fits the D700 body perfectly.
In short..... That is a bummer.
Perry

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piniongear Registered since 29th Jul 2006Sat 24-Mar-12 01:05 AM
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#3. "RE: FT1 vs. AIS problems"
In response to Reply # 2


Houston Texas, US
          

Opps! Now I have to refute some of what I just said.
After thinking about it, I knew I have used AIS lens on the FT1 before.
So I pulled out my AIS 180 f2.8 lens and it fits perfectly on the FT1.
The 24mm AIS does not.
Looking at both lens lugs I see they are different from one another, yet the 180mm lug is not like the AFD lens mounts.
Go figure!

I guess you have to see which AIS lens you own are going to work.
The 180mm does and I am sure I have put other AIS on my FT1 that have worked too.
Perry

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Vox Sciurorum Registered since 18th Oct 2007Sat 24-Mar-12 01:17 AM
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#4. "RE: FT1 vs. AIS problems"
In response to Reply # 3


Newton, US
          

I remember reading that some long AI lenses had a part that engaged a mechanical sensor on the camera to change to a faster exposure mode. Could that be what's going on here? Your 180mm is a fast lens and my 20 and 28 mm lenses are slow?

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piniongear Registered since 29th Jul 2006Sat 24-Mar-12 01:51 AM
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#5. "RE: FT1 vs. AIS problems"
In response to Reply # 4


Houston Texas, US
          

That could very well be, however.....My 24mmAIS is a f/2.8 and it does not fit on the FT1.

Just to confuse matters more, I just tried the FT1 on my 400mm f/3.5 AIS lens and it works perfectly!

There has to be some difference between the mount on different AIS lens which makes some work and some not work.

All of my AIS lens except the 400mm are f2.8.
Your 28mm is an f/2 which is super fast.
I swear I remember putting my 50mm f 1.4 AIS lens on there before.

What I need to do is drag out all of my AIS lens and see which work and which do not.
So far, only the 24mm does not mount.
Perry

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